1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
5 /* Copyright (c) University of Cambridge 1995 - 2018 */
6 /* See the file NOTICE for conditions of use and distribution. */
9 /* Prototypes for functions that appear in various modules. Gathered together
10 to avoid having a lot of tiddly little headers with only a couple of lines in
11 them. However, some functions that are used (or not used) by utility programs
12 are in in fact in separate headers. */
16 extern gstring *call_perl_cat(gstring *, uschar **, uschar *,
17 uschar **) WARN_UNUSED_RESULT;
18 extern void cleanup_perl(void);
19 extern uschar *init_perl(uschar *);
25 std_dh_prime_default(void);
27 std_dh_prime_named(const uschar *);
29 extern uschar * tls_cert_crl_uri(void *, uschar * mod);
30 extern uschar * tls_cert_ext_by_oid(void *, uschar *, int);
31 extern uschar * tls_cert_issuer(void *, uschar * mod);
32 extern uschar * tls_cert_not_before(void *, uschar * mod);
33 extern uschar * tls_cert_not_after(void *, uschar * mod);
34 extern uschar * tls_cert_ocsp_uri(void *, uschar * mod);
35 extern uschar * tls_cert_serial_number(void *, uschar * mod);
36 extern uschar * tls_cert_signature(void *, uschar * mod);
37 extern uschar * tls_cert_signature_algorithm(void *, uschar * mod);
38 extern uschar * tls_cert_subject(void *, uschar * mod);
39 extern uschar * tls_cert_subject_altname(void *, uschar * mod);
40 extern uschar * tls_cert_version(void *, uschar * mod);
42 extern uschar * tls_cert_der_b64(void * cert);
43 extern uschar * tls_cert_fprt_md5(void *);
44 extern uschar * tls_cert_fprt_sha1(void *);
45 extern uschar * tls_cert_fprt_sha256(void *);
47 extern void * tls_client_start(int, host_item *, address_item *,
52 tls_support *, uschar **);
53 extern void tls_close(void *, int);
54 extern BOOL tls_could_read(void);
55 extern int tls_export_cert(uschar *, size_t, void *);
56 extern int tls_feof(void);
57 extern int tls_ferror(void);
58 extern void tls_free_cert(void **);
59 extern int tls_getc(unsigned);
60 extern uschar *tls_getbuf(unsigned *);
61 extern void tls_get_cache(void);
62 extern int tls_import_cert(const uschar *, void **);
63 extern int tls_read(void *, uschar *, size_t);
64 extern int tls_server_start(const uschar *, uschar **);
65 extern BOOL tls_smtp_buffered(void);
66 extern int tls_ungetc(int);
67 extern int tls_write(void *, const uschar *, size_t, BOOL);
68 extern uschar *tls_validate_require_cipher(void);
69 extern void tls_version_report(FILE *);
71 extern BOOL tls_openssl_options_parse(uschar *, long *);
73 extern uschar * tls_field_from_dn(uschar *, const uschar *);
74 extern BOOL tls_is_name_for_cert(const uschar *, void *);
77 extern int tlsa_lookup(const host_item *, dns_answer *, BOOL);
80 #endif /*SUPPORT_TLS*/
83 /* Everything else... */
85 extern acl_block *acl_read(uschar *(*)(void), uschar **);
86 extern int acl_check(int, uschar *, uschar *, uschar **, uschar **);
87 extern int acl_eval(int, uschar *, uschar **, uschar **);
89 extern tree_node *acl_var_create(uschar *);
90 extern void acl_var_write(uschar *, uschar *, void *);
92 #ifdef EXPERIMENTAL_ARC
93 extern void *arc_ams_setup_sign_bodyhash(void);
94 extern const uschar *arc_header_feed(gstring *, BOOL);
95 extern gstring *arc_sign(const uschar *, gstring *, uschar **);
96 extern void arc_sign_init(void);
97 extern const uschar *acl_verify_arc(void);
98 extern uschar * fn_arc_domains(void);
101 extern void assert_no_variables(void *, int, const char *, int);
102 extern int auth_call_pam(const uschar *, uschar **);
103 extern int auth_call_pwcheck(uschar *, uschar **);
104 extern int auth_call_radius(const uschar *, uschar **);
105 extern int auth_call_saslauthd(const uschar *, const uschar *,
106 const uschar *, const uschar *, uschar **);
107 extern int auth_check_serv_cond(auth_instance *);
108 extern int auth_check_some_cond(auth_instance *, uschar *, uschar *, int);
109 extern int auth_client_item(void *, auth_instance *, const uschar **,
110 unsigned, int, uschar *, int);
113 extern int auth_get_data(uschar **, const uschar *, int);
114 extern int auth_get_no64_data(uschar **, uschar *);
115 extern int auth_read_input(const uschar *);
116 extern void auth_show_supported(FILE *);
117 extern uschar *auth_xtextencode(uschar *, int);
118 extern int auth_xtextdecode(uschar *, uschar **);
120 #ifdef EXPERIMENTAL_ARC
121 extern gstring *authres_arc(gstring *);
124 extern gstring *authres_dkim(gstring *);
126 #ifdef EXPERIMENTAL_DMARC
127 extern gstring *authres_dmarc(gstring *);
129 extern gstring *authres_smtpauth(gstring *);
131 extern gstring *authres_spf(gstring *);
134 extern uschar *b64encode(const uschar *, int);
135 extern int b64decode(const uschar *, uschar **);
136 extern int bdat_getc(unsigned);
137 extern uschar *bdat_getbuf(unsigned *);
138 extern int bdat_ungetc(int);
139 extern void bdat_flush_data(void);
141 extern void bits_clear(unsigned int *, size_t, int *);
142 extern void bits_set(unsigned int *, size_t, int *);
144 extern void cancel_cutthrough_connection(BOOL, const uschar *);
145 extern int check_host(void *, const uschar *, const uschar **, uschar **);
146 extern uschar **child_exec_exim(int, BOOL, int *, BOOL, int, ...);
147 extern pid_t child_open_uid(const uschar **, const uschar **, int,
148 uid_t *, gid_t *, int *, int *, uschar *, BOOL);
149 extern BOOL cleanup_environment(void);
150 extern void cutthrough_data_puts(uschar *, int);
151 extern void cutthrough_data_put_nl(void);
152 extern uschar *cutthrough_finaldot(void);
153 extern BOOL cutthrough_flush_send(void);
154 extern BOOL cutthrough_headers_send(void);
155 extern BOOL cutthrough_predata(void);
156 extern void release_cutthrough_connection(const uschar *);
158 extern void daemon_go(void);
160 #ifdef EXPERIMENTAL_DCC
161 extern int dcc_process(uschar **);
164 extern void debug_logging_activate(uschar *, uschar *);
165 extern void debug_logging_stop(void);
166 extern void debug_print_argv(const uschar **);
167 extern void debug_print_ids(uschar *);
168 extern void debug_printf_indent(const char *, ...) PRINTF_FUNCTION(1,2);
169 extern void debug_print_string(uschar *);
170 extern void debug_print_tree(tree_node *);
171 extern void debug_vprintf(int, const char *, va_list);
172 extern void decode_bits(unsigned int *, size_t, int *,
173 uschar *, bit_table *, int, uschar *, int);
174 extern address_item *deliver_make_addr(uschar *, BOOL);
175 extern void deliver_init(void);
176 extern void delivery_log(int, address_item *, int, uschar *);
177 extern int deliver_message(uschar *, BOOL, BOOL);
178 extern void deliver_msglog(const char *, ...) PRINTF_FUNCTION(1,2);
179 extern void deliver_set_expansions(address_item *);
180 extern int deliver_split_address(address_item *);
181 extern void deliver_succeeded(address_item *);
183 extern uschar *deliver_get_sender_address (uschar *id);
184 extern void delivery_re_exec(int);
186 extern BOOL directory_make(const uschar *, const uschar *, int, BOOL);
188 extern uschar *dkim_exim_query_dns_txt(uschar *);
189 extern void dkim_exim_sign_init(void);
191 extern BOOL dkim_transport_write_message(transport_ctx *,
192 struct ob_dkim *, const uschar ** errstr);
194 extern dns_address *dns_address_from_rr(dns_answer *, dns_record *);
195 extern int dns_basic_lookup(dns_answer *, const uschar *, int);
196 extern void dns_build_reverse(const uschar *, uschar *);
197 extern void dns_init(BOOL, BOOL, BOOL);
198 extern BOOL dns_is_aa(const dns_answer *);
199 extern BOOL dns_is_secure(const dns_answer *);
200 extern int dns_lookup(dns_answer *, const uschar *, int, const uschar **);
201 extern void dns_pattern_init(void);
202 extern int dns_special_lookup(dns_answer *, const uschar *, int, const uschar **);
203 extern dns_record *dns_next_rr(const dns_answer *, dns_scan *, int);
204 extern uschar *dns_text_type(int);
205 extern void dscp_list_to_stream(FILE *);
206 extern BOOL dscp_lookup(const uschar *, int, int *, int *, int *);
208 extern void enq_end(uschar *);
209 extern BOOL enq_start(uschar *, unsigned);
210 #ifndef DISABLE_EVENT
211 extern uschar *event_raise(uschar *, const uschar *, uschar *);
212 extern void msg_event_raise(const uschar *, const address_item *);
214 extern const uschar * exim_errstr(int);
215 extern void exim_exit(int, const uschar *);
216 extern void exim_nullstd(void);
217 extern void exim_setugid(uid_t, gid_t, BOOL, uschar *);
218 extern void exim_wait_tick(struct timeval *, int);
219 extern int exp_bool(address_item *addr,
220 uschar *mtype, uschar *mname, unsigned dgb_opt, uschar *oname, BOOL bvalue,
221 uschar *svalue, BOOL *rvalue);
222 extern BOOL expand_check_condition(uschar *, uschar *, uschar *);
223 extern uschar *expand_file_big_buffer(const uschar *);
224 extern uschar *expand_string(uschar *); /* public, cannot make const */
225 extern const uschar *expand_cstring(const uschar *); /* ... so use this one */
226 extern uschar *expand_hide_passwords(uschar * );
227 extern uschar *expand_string_copy(const uschar *);
228 extern int_eximarith_t expand_string_integer(uschar *, BOOL);
229 extern void modify_variable(uschar *, void *);
231 extern BOOL fd_ready(int, int);
233 extern int filter_interpret(uschar *, int, address_item **, uschar **);
234 extern BOOL filter_personal(string_item *, BOOL);
235 extern BOOL filter_runtest(int, uschar *, BOOL, BOOL);
236 extern BOOL filter_system_interpret(address_item **, uschar **);
238 extern uschar * fn_hdrs_added(void);
240 extern void gstring_reset_unused(gstring *);
242 extern void header_add(int, const char *, ...);
243 extern int header_checkname(header_line *, BOOL);
244 extern BOOL header_match(uschar *, BOOL, BOOL, string_item *, int, ...);
245 extern int host_address_extract_port(uschar *);
246 extern uschar *host_and_ident(BOOL);
247 extern int host_aton(const uschar *, int *);
248 extern void host_build_hostlist(host_item **, const uschar *, BOOL);
249 extern ip_address_item *host_build_ifacelist(const uschar *, uschar *);
250 extern void host_build_log_info(void);
251 extern void host_build_sender_fullhost(void);
252 extern int host_find_byname(host_item *, const uschar *, int,
253 const uschar **, BOOL);
254 extern int host_find_bydns(host_item *, const uschar *, int, uschar *, uschar *,
255 uschar *, const dnssec_domains *, const uschar **, BOOL *);
256 extern ip_address_item *host_find_interfaces(void);
257 extern BOOL host_is_in_net(const uschar *, const uschar *, int);
258 extern BOOL host_is_tls_on_connect_port(int);
259 extern int host_item_get_port(host_item *);
260 extern void host_mask(int, int *, int);
261 extern int host_name_lookup(void);
262 extern int host_nmtoa(int, int *, int, uschar *, int);
263 extern uschar *host_ntoa(int, const void *, uschar *, int *);
264 extern int host_scan_for_local_hosts(host_item *, host_item **, BOOL *);
266 extern uschar *imap_utf7_encode(uschar *, const uschar *,
267 uschar, uschar *, uschar **);
269 extern void invert_address(uschar *, uschar *);
270 extern int ip_addr(void *, int, const uschar *, int);
271 extern int ip_bind(int, int, uschar *, int);
272 extern int ip_connect(int, int, const uschar *, int, int, const blob *);
273 extern int ip_connectedsocket(int, const uschar *, int, int,
274 int, host_item *, uschar **, const blob *);
275 extern int ip_get_address_family(int);
276 extern void ip_keepalive(int, const uschar *, BOOL);
277 extern int ip_recv(client_conn_ctx *, uschar *, int, int);
278 extern int ip_socket(int, int);
280 extern int ip_tcpsocket(const uschar *, uschar **, int);
281 extern int ip_unixsocket(const uschar *, uschar **);
282 extern int ip_streamsocket(const uschar *, uschar **, int);
284 extern int ipv6_nmtoa(int *, uschar *);
286 extern uschar *local_part_quote(uschar *);
287 extern int log_create(uschar *);
288 extern int log_create_as_exim(uschar *);
289 extern void log_close_all(void);
291 extern macro_item * macro_create(const uschar *, const uschar *, BOOL);
292 extern BOOL macro_read_assignment(uschar *);
293 extern uschar *macros_expand(int, int *, BOOL *);
294 extern void mainlog_close(void);
295 #ifdef WITH_CONTENT_SCAN
296 extern int malware(const uschar *, int);
297 extern int malware_in_file(uschar *);
298 extern void malware_init(void);
299 extern void malware_show_supported(FILE *);
301 extern int match_address_list(const uschar *, BOOL, BOOL, const uschar **,
302 unsigned int *, int, int, const uschar **);
303 extern int match_address_list_basic(const uschar *, const uschar **, int);
304 extern int match_check_list(const uschar **, int, tree_node **, unsigned int **,
305 int(*)(void *, const uschar *, const uschar **, uschar **), void *, int,
306 const uschar *, const uschar **);
307 extern int match_isinlist(const uschar *, const uschar **, int, tree_node **,
308 unsigned int *, int, BOOL, const uschar **);
309 extern int match_check_string(const uschar *, const uschar *, int, BOOL, BOOL, BOOL,
311 extern void md5_end(md5 *, const uschar *, int, uschar *);
312 extern void md5_mid(md5 *, const uschar *);
313 extern void md5_start(md5 *);
314 extern void millisleep(int);
315 #ifdef WITH_CONTENT_SCAN
316 struct mime_boundary_context;
317 extern int mime_acl_check(uschar *acl, FILE *f,
318 struct mime_boundary_context *, uschar **, uschar **);
319 extern int mime_decode(const uschar **);
320 extern ssize_t mime_decode_base64(FILE *, FILE *, uschar *);
321 extern int mime_regex(const uschar **);
322 extern void mime_set_anomaly(int);
324 extern uschar *moan_check_errorcopy(uschar *);
325 extern BOOL moan_skipped_syntax_errors(uschar *, error_block *, uschar *,
327 extern void moan_smtp_batch(uschar *, const char *, ...) PRINTF_FUNCTION(2,3);
328 extern BOOL moan_send_message(uschar *, int, error_block *eblock,
329 header_line *, FILE *, uschar *);
330 extern void moan_tell_someone(uschar *, address_item *,
331 const uschar *, const char *, ...) PRINTF_FUNCTION(4,5);
332 extern BOOL moan_to_sender(int, error_block *, header_line *, FILE *, BOOL);
333 extern void moan_write_from(FILE *);
334 extern FILE *modefopen(const uschar *, const char *, mode_t);
336 extern int open_cutthrough_connection( address_item * addr );
338 extern uschar *parse_extract_address(uschar *, uschar **, int *, int *, int *,
340 extern int parse_forward_list(uschar *, int, address_item **, uschar **,
341 const uschar *, uschar *, error_block **);
342 extern uschar *parse_find_address_end(uschar *, BOOL);
343 extern uschar *parse_find_at(uschar *);
344 extern const uschar *parse_fix_phrase(const uschar *, int, uschar *, int);
345 extern uschar *parse_message_id(uschar *, uschar **, uschar **);
346 extern const uschar *parse_quote_2047(const uschar *, int, uschar *, uschar *, int, BOOL);
347 extern uschar *parse_date_time(uschar *str, time_t *t);
348 extern int vaguely_random_number(int);
350 extern int vaguely_random_number_fallback(int);
353 extern BOOL queue_action(uschar *, int, uschar **, int, int);
354 extern void queue_check_only(void);
355 extern void queue_list(int, uschar **, int);
356 extern void queue_count(void);
357 extern void queue_run(uschar *, uschar *, BOOL);
359 extern int random_number(int);
360 extern const uschar *rc_to_string(int);
361 extern int rda_interpret(redirect_block *, int, uschar *, uschar *,
362 uschar *, uschar *, uschar *, ugid_block *, address_item **,
363 uschar **, error_block **, int *, uschar *);
364 extern int rda_is_filter(const uschar *);
365 extern BOOL readconf_depends(driver_instance *, uschar *);
366 extern void readconf_driver_init(uschar *, driver_instance **,
367 driver_info *, int, void *, int, optionlist *, int);
368 extern uschar *readconf_find_option(void *);
369 extern void readconf_main(BOOL);
370 extern void readconf_options_from_list(optionlist *, unsigned, const uschar *, uschar *);
371 extern BOOL readconf_print(uschar *, uschar *, BOOL);
372 extern uschar *readconf_printtime(int);
373 extern uschar *readconf_readname(uschar *, int, uschar *);
374 extern int readconf_readtime(const uschar *, int, BOOL);
375 extern void readconf_rest(void);
376 extern uschar *readconf_retry_error(const uschar *, const uschar *, int *, int *);
377 extern void readconf_save_config(const uschar *);
378 extern void read_message_body(BOOL);
379 extern void receive_bomb_out(uschar *, uschar *);
380 extern BOOL receive_check_fs(int);
381 extern BOOL receive_check_set_sender(uschar *);
382 extern BOOL receive_msg(BOOL);
383 extern int_eximarith_t receive_statvfs(BOOL, int *);
384 extern void receive_swallow_smtp(void);
385 #ifdef WITH_CONTENT_SCAN
386 extern int regex(const uschar **);
388 extern BOOL regex_match_and_setup(const pcre *, const uschar *, int, int);
389 extern const pcre *regex_must_compile(const uschar *, BOOL, BOOL);
390 extern void retry_add_item(address_item *, uschar *, int);
391 extern BOOL retry_check_address(const uschar *, host_item *, uschar *, BOOL,
392 uschar **, uschar **);
393 extern retry_config *retry_find_config(const uschar *, const uschar *, int, int);
394 extern BOOL retry_ultimate_address_timeout(uschar *, const uschar *,
395 dbdata_retry *, time_t);
396 extern void retry_update(address_item **, address_item **, address_item **);
397 extern uschar *rewrite_address(uschar *, BOOL, BOOL, rewrite_rule *, int);
398 extern uschar *rewrite_address_qualify(uschar *, BOOL);
399 extern header_line *rewrite_header(header_line *,
400 const uschar *, const uschar *,
401 rewrite_rule *, int, BOOL);
402 extern uschar *rewrite_one(uschar *, int, BOOL *, BOOL, uschar *,
404 extern void rewrite_test(uschar *);
405 extern uschar *rfc2047_decode2(uschar *, BOOL, uschar *, int, int *, int *,
407 extern int route_address(address_item *, address_item **, address_item **,
408 address_item **, address_item **, int);
409 extern int route_check_prefix(const uschar *, const uschar *);
410 extern int route_check_suffix(const uschar *, const uschar *);
411 extern BOOL route_findgroup(uschar *, gid_t *);
412 extern BOOL route_finduser(const uschar *, struct passwd **, uid_t *);
413 extern BOOL route_find_expanded_group(uschar *, uschar *, uschar *, gid_t *,
415 extern BOOL route_find_expanded_user(uschar *, uschar *, uschar *,
416 struct passwd **, uid_t *, uschar **);
417 extern void route_init(void);
418 extern void route_show_supported(FILE *);
419 extern void route_tidyup(void);
421 extern uschar *search_find(void *, uschar *, uschar *, int, const uschar *, int,
423 extern int search_findtype(const uschar *, int);
424 extern int search_findtype_partial(const uschar *, int *, const uschar **, int *,
426 extern void *search_open(uschar *, int, int, uid_t *, gid_t *);
427 extern void search_tidyup(void);
428 extern void set_process_info(const char *, ...) PRINTF_FUNCTION(1,2);
429 extern void sha1_end(hctx *, const uschar *, int, uschar *);
430 extern void sha1_mid(hctx *, const uschar *);
431 extern void sha1_start(hctx *);
432 extern int sieve_interpret(uschar *, int, uschar *, uschar *, uschar *,
433 uschar *, address_item **, uschar **);
434 extern void sigalrm_handler(int);
435 extern BOOL smtp_buffered(void);
436 extern void smtp_closedown(uschar *);
437 extern void smtp_command_timeout_exit(void);
438 extern void smtp_command_sigterm_exit(void);
439 extern void smtp_data_timeout_exit(void);
440 extern void smtp_data_sigint_exit(void);
441 extern uschar *smtp_cmd_hist(void);
442 extern int smtp_connect(smtp_connect_args *, const blob *);
443 extern int smtp_sock_connect(host_item *, int, int, uschar *,
444 transport_instance * tb, int, const blob *);
445 extern int smtp_feof(void);
446 extern int smtp_ferror(void);
447 extern uschar *smtp_get_connection_info(void);
448 extern BOOL smtp_get_interface(uschar *, int, address_item *,
449 uschar **, uschar *);
450 extern BOOL smtp_get_port(uschar *, address_item *, int *, uschar *);
451 extern int smtp_getc(unsigned);
452 extern uschar *smtp_getbuf(unsigned *);
453 extern void smtp_get_cache(void);
454 extern int smtp_handle_acl_fail(int, int, uschar *, uschar *);
455 extern void smtp_log_no_mail(void);
456 extern void smtp_message_code(uschar **, int *, uschar **, uschar **, BOOL);
457 extern void smtp_proxy_tls(void *, uschar *, size_t, int *, int);
458 extern BOOL smtp_read_response(void *, uschar *, int, int, int);
459 extern void smtp_reset(void *);
460 extern void smtp_respond(uschar *, int, BOOL, uschar *);
461 extern void smtp_notquit_exit(uschar *, uschar *, uschar *, ...);
462 extern void smtp_port_for_connect(host_item *, int);
463 extern void smtp_send_prohibition_message(int, uschar *);
464 extern int smtp_setup_msg(void);
465 extern BOOL smtp_start_session(void);
466 extern int smtp_ungetc(int);
467 extern BOOL smtp_verify_helo(void);
468 extern int smtp_write_command(void *, int, const char *, ...) PRINTF_FUNCTION(3,4);
469 #ifdef WITH_CONTENT_SCAN
470 extern int spam(const uschar **);
471 extern FILE *spool_mbox(unsigned long *, const uschar *, uschar **);
473 extern void spool_clear_header_globals(void);
474 extern uschar *spool_dname(const uschar *, uschar *);
475 extern uschar *spool_fname(const uschar *, const uschar *, const uschar *, const uschar *);
476 extern BOOL spool_move_message(uschar *, uschar *, uschar *, uschar *);
477 extern int spool_open_datafile(uschar *);
478 extern int spool_open_temp(uschar *);
479 extern int spool_read_header(uschar *, BOOL, BOOL);
480 extern uschar *spool_sname(const uschar *, uschar *);
481 extern int spool_write_header(uschar *, int, uschar **);
482 extern int stdin_getc(unsigned);
483 extern int stdin_feof(void);
484 extern int stdin_ferror(void);
485 extern int stdin_ungetc(int);
486 extern gstring *string_append(gstring *, int, ...) WARN_UNUSED_RESULT;
487 extern gstring *string_append_listele(gstring *, uschar, const uschar *) WARN_UNUSED_RESULT;
488 extern gstring *string_append_listele_n(gstring *, uschar, const uschar *, unsigned) WARN_UNUSED_RESULT;
489 extern gstring *string_append2_listele_n(gstring *, const uschar *, const uschar *, unsigned) WARN_UNUSED_RESULT;
490 extern uschar *string_base62(unsigned long int);
491 extern gstring *string_cat (gstring *, const uschar * ) WARN_UNUSED_RESULT;
492 extern gstring *string_catn(gstring *, const uschar *, int) WARN_UNUSED_RESULT;
493 extern int string_compare_by_pointer(const void *, const void *);
494 extern uschar *string_copy_dnsdomain(uschar *);
495 extern uschar *string_copy_malloc(const uschar *);
496 extern uschar *string_copylc(const uschar *);
497 extern uschar *string_copynlc(uschar *, int);
498 extern uschar *string_dequote(const uschar **);
499 extern gstring *string_fmt_append(gstring *, const char *, ...) ALMOST_PRINTF(2,3);
500 extern BOOL string_format(uschar *, int, const char *, ...) ALMOST_PRINTF(3,4);
501 extern uschar *string_format_size(int, uschar *);
502 extern uschar *string_from_gstring(gstring *);
503 extern gstring *string_get(unsigned);
504 extern int string_interpret_escape(const uschar **);
505 extern int string_is_ip_address(const uschar *, int *);
507 extern BOOL string_is_utf8(const uschar *);
509 extern uschar *string_nextinlist(const uschar **, int *, uschar *, int);
510 extern uschar *string_open_failed(int, const char *, ...) PRINTF_FUNCTION(2,3);
511 extern const uschar *string_printing2(const uschar *, BOOL);
512 extern uschar *string_split_message(uschar *);
513 extern uschar *string_timediff(struct timeval *);
514 extern uschar *string_timesince(struct timeval *);
515 extern uschar *string_unprinting(uschar *);
517 extern uschar *string_address_utf8_to_alabel(const uschar *, uschar **);
518 extern uschar *string_domain_alabel_to_utf8(const uschar *, uschar **);
519 extern uschar *string_domain_utf8_to_alabel(const uschar *, uschar **);
520 extern uschar *string_localpart_alabel_to_utf8(const uschar *, uschar **);
521 extern uschar *string_localpart_utf8_to_alabel(const uschar *, uschar **);
523 extern gstring *string_vformat(gstring *, BOOL, const char *, va_list);
524 extern int strcmpic(const uschar *, const uschar *);
525 extern int strncmpic(const uschar *, const uschar *, int);
526 extern uschar *strstric(uschar *, uschar *, BOOL);
528 #ifdef EXIM_TFO_PROBE
529 extern void tfo_probe(void);
531 extern void timesince(struct timeval * diff, struct timeval * then);
532 extern void tls_modify_variables(tls_support *);
533 extern uschar *tod_stamp(int);
535 extern BOOL transport_check_waiting(const uschar *, const uschar *, int, uschar *,
536 BOOL *, oicf, void*);
537 extern void transport_init(void);
538 extern void transport_do_pass_socket(const uschar *, const uschar *,
539 const uschar *, uschar *, int);
540 extern BOOL transport_pass_socket(const uschar *, const uschar *, const uschar *, uschar *,
542 extern uschar *transport_rcpt_address(address_item *, BOOL);
543 extern BOOL transport_set_up_command(const uschar ***, uschar *,
544 BOOL, int, address_item *, uschar *, uschar **);
545 extern void transport_update_waiting(host_item *, uschar *);
546 extern BOOL transport_write_block(transport_ctx *, uschar *, int, BOOL);
547 extern void transport_write_reset(int);
548 extern BOOL transport_write_string(int, const char *, ...);
549 extern BOOL transport_headers_send(transport_ctx *,
550 BOOL (*)(transport_ctx *, uschar *, int));
551 extern void transport_show_supported(FILE *);
552 extern BOOL transport_write_message(transport_ctx *, int);
553 extern void tree_add_duplicate(uschar *, address_item *);
554 extern void tree_add_nonrecipient(uschar *);
555 extern void tree_add_unusable(host_item *);
556 extern int tree_insertnode(tree_node **, tree_node *);
557 extern tree_node *tree_search(tree_node *, const uschar *);
558 extern void tree_write(tree_node *, FILE *);
559 extern void tree_walk(tree_node *, void (*)(uschar*, uschar*, void*), void *);
561 #ifdef WITH_CONTENT_SCAN
562 extern void unspool_mbox(void);
565 extern void utf8_version_report(FILE *);
568 extern int verify_address(address_item *, FILE *, int, int, int, int,
569 uschar *, uschar *, BOOL *);
570 extern int verify_check_dnsbl(int, const uschar **, uschar **);
571 extern int verify_check_header_address(uschar **, uschar **, int, int, int,
572 uschar *, uschar *, int, int *);
573 extern int verify_check_headers(uschar **);
574 extern int verify_check_header_names_ascii(uschar **);
575 extern int verify_check_host(uschar **);
576 extern int verify_check_notblind(void);
577 extern int verify_check_given_host(const uschar **, const host_item *);
578 extern int verify_check_this_host(const uschar **, unsigned int *,
579 const uschar*, const uschar *, const uschar **);
580 extern address_item *verify_checked_sender(uschar *);
581 extern void verify_get_ident(int);
582 extern BOOL verify_sender(int *, uschar **);
583 extern BOOL verify_sender_preliminary(int *, uschar **);
584 extern void version_init(void);
586 extern BOOL write_chunk(transport_ctx *, uschar *, int);
587 extern ssize_t write_to_fd_buf(int, const uschar *, size_t);
592 /* End of functions.h */